Floor-conduit and detachable cover therefor.



G. W. WAUHTEL, JR. FLOOR GONDUIT AND DETAGHABLE COVER THEREFOR.

APPLICATION FILED DEC. 3, 1908.

WITN SSES: 0 ENTOR:

a W EhET1ESW.VV E C1'\IE1-JIZ film/ mam.

ATTORNEYS.

G. W. WAUHTEL, JR. FLOOR OONDUIT AND DETAGHABLE COVER THEREFOR.

APPLIOATION FILED DEC. 3, 1908.

Patented May 18, 1909.

7 SHEETS-SHEET 2..

ATTORNEYS.

.Wa cue 11112, Altar/W01 n Rm m\ km W4 MW WITNE 0. W. WACHTEL, JR. FLOOR GONDUIT AND DETAGHABLE COVER THEREFOR.

APPLICATION FILED DEC 3, 1908.

922,368, Patented May 18, 1909.

'l SHBETSBHBET 3.

WITNESSES: INVENTORZ 9; moadmd ATTORNEYS.

O. W. WAOHTEL, JR. FLOOR OONDUIT AND DETAGHABLE COVER THEREFOR.

APPLICATION FILED DEC. 3, 1908.

922,868, Patented May 18, 1909.

7 SHEETS-SHEET 5- q INVENTORK Y 37 5 fi? V EhBflESW4MBHE1Jt,

ATTORNEYS G. W. WAGHTEL, JR. FLOOR GONDUIT AND DETAOHABLE GOVER THEREFOR.

APPLIUATION FILED DBO. s, 1908.

922,368. Patented May 18, 1909.

7 SHEETS-SHEET 6.

WITNESSES: mvzmoni ATTORNEYS o. W. WAOHTEL, JR. FLOOR GONDUIT AND DETAGHABLE COVER THEREFOR.

. APPLICATION FILED DEC. 3, 19GB. 922,368, Patented May 18, 1909.

7 SHEETS-SHEET 7.

INVENTOR.

CHARLES W. WAGHTEL, JR.,

OF'NEWARK, NEW JERSEY.

FLOOR-CONDUIT AND bETAGHABLE COVER THEREFOR.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed December 3, 1908. Serial No. 465,795.

To all whom 'it may concern:

Be it known that I, CHARLES W. WACHTEL,

1 J12, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have inventedcertain new and useful Im rovenients in Floor-Conduits and Detachab e Covers Therefor; and I dohereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specification.

This invention relates, generally, in improvements in electrical conduits for buildlngs; and, my present invention has reference, more particularly, to a novel construction and novel disposal of conduit'sections or elements which are adapted to be connected so as to provide long ducts or conduits for the arrangement therein of' the various kinds of electric cables or wiring, said connected sections being placed in the floor of a building, beneath the floor-boards thereof, and the several conduit-sections being provided with detachable covers, placed beneath floor-covers or traps, separably dis- ,posed in the flooring, and the said covers of the conduit-sections being also preferably provided with suitably formed outlets, normally closed by detachable plates or members, located beneath similar plates in the floor-covers or traps, for withdrawing the cables or wires from within the floor-conduit to a point or points above the floor for connection with electrical appliances mounted upon a desk or desks, or other articles of furmture, or places within the room.

My present invention has for its principal object to provide a novel and simply constructed electrical conduit for buildings, adapted to be placed beneath the flooring,

and the conduit, as well as portions of the floor-boards there-above, being arranged and constructed in such a manner, so that the arrangement of electric cables and wires within the conduit, as well as the making of electrical connections therewith, may be easily and quickly made, at a minimum expenditure of time and expense; and, furthermore, to provide a means for readily withdrawing I the electric wires from within the conduit, at

desired points, to points above the flooring for makin electrical connections with electrical app iances, mounted upon desks or other furniture, or suitable )laces within the room, without being compelled to tear up the floor-boards, and possibly destroy the boards so that they have to be replaced with new boards, or that the flooring has to be patched with portions of new boards, thereby resulting in an unsightly and unfinished floor, after the relaying of the flooring.

A further object of my present invention is to provide a novel form of floor-conduit provided with parallel ducts or chambers for the reception of cables or wires carrying electric currents of different degrees of strength, as the electric currents for lighting purposes and those for bell-wiring or signaling purposes; and, furthermore, to provide a novel form of floor-conduit formed with a multiplicity of ducts or members, and de pressed duct-portions connecting one main duct with another duct, so that. the cables or wires carrying a heavy electric current may be extended from one duct into another duct, without crossing directly into and through a duct in which wires carrying a lighter capacity of electric current are arranged, so that the electric cables or wires can not be brought in direct engagement or contact with each other, and whereby all dan er of short-circuiting the electric wires, am any consequent danger resulting from such electrical contact of the crossed wires is completely obviated.

Other objects of this invention not at this time more particularly enumerated will be clearly understood from the following detailed description of the same and, with the various olnects of my present lnvention in view, the

said invention consists, primarily, in the novel 9 floor-conduit and conduit-sections for building hereinafter set forth; and, the invention consists, furthermore, in the novel arrangements and combinations of the various devices and parts, as well as in the details of the construction of the same, all of which will be more fully described in the following specification, and then finally embodied in the clauses of the claims which are appended to and whichlform an essential part of this specification.

The invention isv clearly: illustrated in the accompanying drawings, in which .Figure 1 is a horizontal sectional representatlon of a room, sald VIGWShOWIHg 111,

connection therewith, and in plan, an arrangement of floor-beams and floor-boards,

provided with suitably disposed floor-covers.

to more clearly show the inner arrangement of the parallel conduit-ducts or chambers. Fig. 3 is a transverse sectional representation of a series of connected conduit-sections, showing in connection therewith, and in section, an arrangement of floor-boards and the floor-covers or traps, and also in vertical section the arrangement of the conduitcovers, said view also showing in elevation portions of the floor-beams, and in transverse section an arran ement of mctalgirders or I-beams upon which the various parts are usually supported. Fig. 4 is a plan view of a T-shaped conduit-section forming part of the floor-conduit; and Fig. 5 is an end view of the same. Fi 6 is a plan view of the lower chambered ody of said section, with the coverremoved; Fig. 7 is a transverse section, talgen on line 7'7 in said Fig. 4; and Fig. 8 is a similar section, taken on line 88-in said Fig. 4. Fig. 9 is a plan view of a cross-shaped conduit-section forming part of the floor-conduit; Fig. 10 is an end view of the same; Fig. 11 is aplan view of the lower chambered body of said section, with the cover removed; Fig. 12 is a transverse section, taken on line 1212 in said Fig. 9 and Fig. 13 is a similar section, taken on line 1313 in said Fi 9, Fig. 14 is a top or planview of one 0 thestraight conduit-sections formi part of the floor-conduit represented in Figs. 1 and 2. Fig. 15 is a top or plan view of one of the floor-covers or traps; and Fig. 16 is a longitudinal section of the same, said section being taken on line 1616 in said Fig. 15. Fig. 17 is a crosssection of a conduit-section and its conduitcover, said view showing in elevation portions of the floor-beams, and in section, portions of the floor-boards, a floor-cover or trap, and an arrangement of outlet-plates in both said conduit-cover and said floorcover, said view being made on a still lar er scale. Fig. 18 is a top or plan view 0 a series of connected conduit-sections, each provided with a single duct, with the conduit-covers omitted, said view showing a modified form of floor conduit, the same, however, still embodying the principal features of my present invention.

Similar characters of reference are employed in all of the above described views,

to indicate corresponding parts.

body 5, and being prefera Referring now to the said figures of the drawings, the rcference-charactors 1 indicates the walls of any suitable buildin 2 the wooden floor-beams, and 3 the usua floorboards which are arranged upon and secured to the said floor-beams 1n any usual manner. As shown in Fig. '3 of the' drawings, the reference-character 4 indicates the usuallbeams or girders of metal, which are sometimes employed, and upon which the said.

beams 2 rest and are supported. The electrical conduit which embodies tlieprinciples of my present invention comprises any suitable number of conduit-sections, adapted to be secured end to end, in the manner and for the purposes hereinafter more fully described, and which are usually set in concrete or cement, not here shown, and in which the said floor-beams 2 are also embedded, the said concrete or cement being disposed between the metal beams or girders 4 in the usual and well-known manner.

As shown in the several figures of the drawings, and more particularly in Fig. 2, various forms of conduit-sections which go to make up the complete electrical floor-conduit may be employed, the said conduit consisting of a multiplicity of rectangular sections, elbow or L-shaped sections, T-shaped sections, and cross-sha ed sections which are all suitably connecte and variously arranged so as to provide a series of communicating conduits or ducts, such arrangement being illustrated in Figs. 1 and 2 of the drawings.

From an inspection of said Figs. 2 and 17, it will be seen, that the rectangularly formed sections each consist of a main body 5 formed with upwardly projecting and 1011 itudinally extending side-members or wal s 6, having laterally projecting flanges 7 which are provided with bolt or screw-receiving holes or perforations 8. Thus it will be seen that each main body is open at its respective ends and at its top. Each main body 5 is also made at its ends with laterally extending and vertically disposed flanges 9 which are provided with perforations or holes for the I specified. T e said side-members or walls 6 may also be provided at suitable oints upon their outer surfaces with latera y extending projections or lugs, as 10, which become thoroughly embedded or incased in the concrete or cement when the latter hardens, so as to thoroughly fix eachconduit-section in place against any movement or accidental displacement, as will be clearly understood. The main body 5 of each conduit-section is also made with one or more longitudinally extending walls, as 11, so as to provide suitable chambers or conduitducts', as shown, each section in this case being provided with but one wall or partition 11. Suitablysecured upon the upper open pbart of each main ly of the same purposes hereinafter more fully bent. also made'with perforated anges 27, upon length, is a metal conduit-cover 12 formed upon its under face with suitable ribs 13 made to register with the side-members or walls 6 of the main body 5, so that the cover can be easily and quickly fitted in position, as will be evident from an inspection of said Fig. 17. The longitudinal marginal )ortions of the conduit-cover rest upon the flanges 7 of the said main body 5, being provided with holes or perforations which register with the holes or perforations in said flanges 7 for the reception of suitable screws or bolts, as 14, to secure said-cover in place. Each conduitcover 12 is also-made near one of its end-portions with one or more outlet-openings, as

15, the said openings being surrounded by' the upwardly extending portions or walls 16; and, resting uponsaid walls 16 and suitably secured thereto by means ,of screws 17 are cover-plates 18. Each late 18 is preferably formed with a centre ly disposed screwthreaded opening 19 into which is screwed a screw-threaded stud 20, the u per portion of the stud being preferably 1 ush with the upper surface of the plate 18. Upon its lower face, the said plate 18 may be made with downwardly extendin ribs or projections 21 which register Wlti the inner surface-portions of the walls 16, so as to readily dispose the said plate 18 in its closing position upon said walls 16 to close the outletopening 15, as will be clearly evident. Any number of said rectangularly formed conduit-sections may be placedend to end, the vertically disposed flanges 9 of one section being fitted upon the corresponding flanges 9 of the next adjacent section, the holes or perforations in. the abutting flanges 9 being made to register, and the conduit-sections being secured together or tied end to end by means of suitable bolts 22 and nuts 23, substantially as shown. 1 As shown, if the floorconduit is to be arranged with an angle, or bend, that is, if the duct or ducts thus provided are to be connected at an angle, as a right angle, toeach other, then two of said rectangular-1y sha ed sections are connected by means of an el ow-shaped or an L-shaped conduit-section, see Fig. 2, each section con- 'sisting of a corres. ondingly shaped main body 24 formed wit suitably bent or curved side-walls 25 and an intermediate wall or partition 26, which is also suitably curved or The said elbow-sha ed body 24 is which is arranged and secured in the manner hereinabove described, a correspondingly formed conduit-cover 28, substantially as shown in. Fig. 1. The said elbow or L- shaped sections are also made with vertically disposed and perforated flanges'which, how-- ever, are notshown, because of their similarity to the previously mentioned flanges 9, for operatively connecting the said elbow or L-shap'ed section. to and between a pair of the previously described rectangularly formed con(hut-sections described in the foregoing.

lhen the said. floor-conduits are to be arranged in such a manner so as to rovide both intermediately disposed longitudinal and lateral ducts, it will be necessary to provide suitably formed T-shaped and cross shaped conduit-sections, as clearly illustrated in the several figures of the drawings. In Figs. 4 to 8 inclusive, I have shown on an enlarged scale one of said T-shaped sections. Each T-shaped section conslsts, essentially, of a correspondingly shaped main body 29 formed along its longest mar inal edge-portion with a side-member or wall 30 formed with laterally projecting flange 31 provided with bolt or screw-receiving holes or perforations 32. At its opposite edgeportions the said main body 29 is formed with angular side-members or Walls 33 having flanges 34 which are provided with holes or perforations 35. Vertical flanges 36 are also provided, said flanges being formed with holes or perforations, for the reception of bolts by means of which the said T-shaped conduit-sections may be suitably connected with and secured between a number of the previously mentioned rcctangularly shaped conduit-sections. The main body 29 1s also provided with an arrangement of inner walls or partitions, as 37, 38 and 39, so as to provide the duct-portions 40, 41, 42, and 43, the duct-portion 42 communicating directly with the duct-portion 41. To establish a communication between the duct-portion 40 and the duct-portion 43, the said main body 29 is formed with a chambered part 44 which extends in a downward direction from the duct-portion 40 and laterally beneath the duct portion 41 and then extends upwardly so as to communicate with the duct-portion 43, thus enabling-the electrician to draw thecables or wires in the duct-portion 40 over into the duct-portion 43 without coming in contact with any of the wires which may be arranged in the duct-portion 41. If desired, the duct-portion 41 may be made with an opening in communiczition with the chambered part 44, said opening being ordinarily closed by means of a suitable plate, as 45, but which can be removed to enable the workman to reach down into the chambered part 44, if at any time necessary. Each T-shaped body-section 29 is also provided with a correspondingly formed conduitcover 46 formed upon its under surface with suitable ribs 47 made to register with the sidemembers of said body 29, so that the cover can be easily and quickly fitted in position, as will be clearly evident. -Theedge-portions of said conduit-cover 46 rest upon the flanged portions of said body 29, being provided wlth holes or perforations which register with the holes or perforations in said flanges for the reception of suitable screws or bolts, as 48, to secure said cover in place. Each condult-covor 46 is also made near one of its end-portions with one or more outlet-- 1s screwed a screw-threaded stud 54, the

upper portion ofthe stud being preferably flush with the upper surface ofthe plate 52. Upon its lower face, the said plate 52 may be made with downwardly extending ribs or projections 55 which register with the inner surface-portions of the walls 50, so as to readily dispose the said plate 52 in its closing position upon said walls 50 to close the outlet opening 49.

Each cross-shaped conduit-section consists, essentially, of a correspondingly'shaped main body 57 formed along its marginal edge-portions with side-members or walls 58, each wall being provided with a laterally projecting flange 59 having bolt or screw-receiving holes or perforations 60. The said main body 57 is also made with vertical flanges 61 which. are provided with holes or perforations for the reception of bolts by means of which the said cross-shaped conduit-sections may be suitably connected with and secured between a number of the reviou'sly mentioned rectangularly shape conduit-sections: The main body 57 is also provided with an arrangement of inner walls or artitions, as 62, 63 and 64, so as to provi e duct-portionsor passages 65, 66, 67, 68, 69, 70, 71 and 72, substantially as shown in Fig. 11 of the drawings, the duct-portions 69,

, 70, 71 and 72 being in direct communication with each other, and the'duct-portions65 communicating directly with the duct-portions 67, as shown. To establish communication between either duct-portion '65 or 67 and the duct-portion 66, and also to establish communication between either duct-portion 65 or 67 and the ductortion 68, the said main body 57 is provi ed upon its bottom with a cross-shaped or other suitably shaped chambered part 73 which connects these various duct-portions and extends beneath the directly connected duct-portions 69 and 7 0, and 71 and 72, to enable the electrician to draw the tires or cables from the duct-portions 65 and 67 into either duct-portion 66 or 68 without crossing the wires in the ductportions 69 and 7 0, or 71 and 72. If desired,

suitable openings may be left, said openin s being ordinarily closed by means of suitab e plates, as 74 and 75, but which can heremovedto enable the workman to reach down into the chambered part 73, if at any time necessary. Each cr0ssshaped body-section 57 is also provided with a correspondingly formed conduit-cover 76 formed upon its under surface-with suitable ribs 77 made to register with the side-members of the said body 57, so that the cover can be easil and quickly fitted in position, as will be 0 early evident. The edge-portions of said conduitcover 76 rest upon the flanged portions of said body 57 being provided with holes or perforations which register with the holes or perforations in said flanges for the reception of suitable screws or bolts 78, to secure said cover in place. Each conduit-cover 76 is also made near one of its end-portions with one or more outlet-openings, as 79, the said openings being surrounded by upwardly extending ortions or walls 80 and, resting upon said we s 80 and suitably secured thereto by means of screws 81 are cover-plates 82. Each late 82 is preferably formed with a centra ly disposed screw-threaded opening 83 into which is screwed a screw-threaded stud 84, the upper portion of the stud being referably flush with the upper surface 0 the plate 82. Upon its lower face, the said plate 82 may be made with downwardly extending ribs or projections 85 which register with the inner surface-portions of the walls 80, so as to readily dispose the said late 82 in its closing position upon said wa s 80 to close the outlet-opening 79. I

From the foregoing description it will be clearly seen, that by means of the variously formed conduit-sections, connected in the manner set forth, I have provided a suitable floor-conduit in whichv various electric-cables and Wires may be arranged in diflerent chambers or compartments, so that the wires carrying diiferent currents will not be brought in contact with each other toproduce dangerous shortcircuits, each separate condu'it-section being provided with a separable sectional conduit-cover which can be removed so as to expose to the workman, the entire interior of any one or more conduitsections, and in fact the entire conduit, if desired; or, each conduit-cover being provided with-one or more outlets closed by means of the detachable cover-plates or outlet-closing plates, any one or more of such plates may be removed to enable; the workman to reach down into the duct-portion of any section for the purposes of drawing or fishing the electric wiree through the conduit; and, furthermore, by removing the-screw-threaded plugs or studs from the said ,closing plates of the conduit-covers, any wire or wires may be pulled through the opening for the purposes of conveying the same'to a suitable point above the flooring.

As will be seen from an inspection of Figs. 1 and 17, in order to permit the removal of the conduit-cover of each conduit-section,- without having to tear up the floor-boards 3 to the damage of the flooring, the said floorceases ing may be provided with removable flooroovers or traps, as 86, the same as will be seen from an inspection of Fig. 16 being usually made up of a number of portions of floor-boards, suitably secured together by means of cross-pieces or cleats 87, usually and preferably of metal. These covers or traps 86 are removably arranged, section for section and end to end, in the flooring so as to be located directly above the conduitcovers, the said covers or traps 86, being of greater width than that of the conduit covers, and their longitudinal edge-portions restin directly upon portions of the wooden flo'oreams 2, being suitably secured in place by means of wood-screws 88. Since these covers or traps 86 are tightly fitted in the flooring, to remove the same without mar-ring or damaging the edges of said covers, or of the surrounding floor-boards, by the use of a prying tool, each cover or trap 86 is made in its cross-pieces or cleats 87 with screw-threaded holes 89, each hole 89 "being in alinement with a hole 90 formed in the wooden part of the cover or trap. Countersunk into the upper surface of each cover or trap 86 are plates 91, being permanently secured in place by means of screws 92. Each plate 91 is also made with a screw-threaded hole 93 in alinement with the holes 89 and 90, each hole being preferably closed with a screwthreaded plug 94. To remove the cover or I trap 86 from the opening in the flooring, so

as to permit the workman to get at and remove the corresponding conduit-cover, he simply removes the two screwthreaded plugs 94, and then screws into their places, the correspondingly screw-threaded shanks of a pair of lifting-implements, provided with suitable hand-pieces, by means of which'the cover or trap 86 can be readily raised, as will be clearly evident. The said cover or trap 86, as will be seen from Figs. 15 and 17, may

also be provided with openings 95, corre- I sponding to the outlet-openings in the said conduit-covers, each opening 95 being closed by means of a detachably secured closingplate 96 havingits marginal edge-portions resting in a depressed part 97 of the main cover or trap 86 and secured in place by means of screws 98. Each plate 96 is also provided with a screw-threaded hole 99,normally closed by means of a screw-threaded plug 100, which can be removed for pulling the electric Wires therethrough for making electrical connection with electrical appliances in the room, or for screwin the screwthreaded shank of a lifting imp ement into the same, so as to remove the plate 96 when the screws 98 have been removed, as will be clearly evident.

From the foregoing description of my present invention it will be seen that I have devised a novel, simple and useful floor-conduit for buildings, which can be easily got at for the drawing through the conduit-ducts of the electric cables or'wires, 'or for making electrical connections with the cables or wires, and for bringing the wires, at different points in the flooring, to desks or other pieces of furniture in a room, without destroying or mar-ring any portion or portions of the floor; and, furthermore, the conduit-covers, as well as the floor-covers or traps being reversible, the positions of the outlets from any one or all of the conduit-sections can be changed so as to suit any change of location of a desk or desks in the room, without being compelled to tear up the floor-boards, the connecting wires leading from the conduit in each instance entering the desk at a suitable point beneath, or directly at the back of the desk.

Referring now to Fig. 18 of the drawings, I have shown therein a floor-conduit having but a single duct-portion, the said conduit being made up of any number of rectan ularly shaped conduit-sections 101, a num er of elbow or L-shaped conduit-sections 102, a number of T-shaped conduit-sections 103, and a number of cross-shaped conduit-sections 104, all of which are of the general construction of the previously described conduit-sections, and are similarly secured in their connected relations, the internally disposed walls or partitions and the lowered cross-over ducts or elements, however, being omitted, because these features are not necessary in this form of floor-conduit.

As shown in Fig. 2, suitable inlet-boxes, as 105, or 106 as in Fig. 18, may also be provided, said boxes being closed by means of box-covers 107, over which are arranged suitable floor-covers or traps 108, substantially as indicated in Fig. 1 of the drawings.

I am aware that changes may be made in the arrangements and combinations of the various devices and parts, as well as in the details of the construction of the same, without departing from the scope of my present invention as set forth in the foregoing specification, and as defined in the claims thereto appended. Hence I do not limit m tion to the exact arrangements an combinations of the devices and parts as described in the said specification, nor do I-confine myself to the exact details of the construcinveni said hole.

screw-threaded plug removably arranged in 2. A floor-conduit for buildings comprising'a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an 0 en top, a dividing wall extending upwar ly from said main body, means for securing said sections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet openin surrounded by an upwardly extendin wa l-portion, and a closing-plate detachably secured upon said wall-portion.

3. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an 0 en top, a dividing wall extendlng upwar ly from said main body, means for securing said sections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet openin surropnded by an u wardly extending wa ortion, a closing-p ate detachably secure upon said wall-portion, said late being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole.

4. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extendin flanges at the upper edges of said side-wa ls, verticalfl angesat the ends of each section,-means lgor securin ythe vertical flanges ,of one secion upon the vertical flan es of another sectionj and a'conduit-cover etachably secured upon'the flanges of said side-walls, each condp'it-eover being formed with an outlet opening surrounded by an upwardly extending wall-portion, and a closing-plate detachably secured upon said wall portion.

5. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting 'of a main body and side-walls, and being formed with open ends and an open to laterally extending flanges at the upper e ges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a conduit-cover detachably secured upon the flanges of said side-walls, each conduit-cover being formed with an outlet opening surrounded by an upwardly extending wallportion, a closing-plate detachably secured upon said wall-portion, said plate being pro- 60 vided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole. 1

6. A floor-conduit for buildings, comprising a multiplicity of conduit-sections, each 65 section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means the upper edges of said side-walls, vertical flanges at the ends of each. section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, and a conduit-cover detachably secured upon the flanges of said side-walls, each conduitcover being formed with an outlet opening surrounded by an upwardly extending wall-portion, and a closing plate detachably secured upon said wall-portion.

8. A floor-conduit for buildings, comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open'ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each sect-ion, means for securing the vertical flanges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, a conduit-cover detachably secured upon the flanges of said side-walls, each conduit-cover being formed with an outlet op-ening surrounded by anupwardly ex tending wall-portion, a closing-plate detachably secured upon said wall-portion, said plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole.

9. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open ends and an open top, means forseeuring said sections end to end, and a conduit-cover detachably secured upon each section, combined with the floor-beams and floor-boards, and floorc'overs detachably secured to said floorbeams, directly over each conduit-00v er, substantially as and for the purposes set forth.

1.0. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, each conduit-v cover being formed with an outlet opening surrounded by an upwardly extending wallportion, and a closing-plate detachably seaeases cured upon said wall portion, combined with the floor-beams and floor-boards, and floorcovers dctarhably secured to said floorbeanis, directly over each conduit-cover, substantially as and for the purposes set forth.

11. A floor-conduitfor'buildings comprising a multiplicity of'conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, each conduitcover being formed with an outlet opening surrounded by an upwardly extending Wallportion, a closing-plate detachably secured upon said wall-portion, said plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover, substantially as and for the purposes set forth.

12. A floor-conduit for buildings comprising'a multiplicity of conduit-sections each section consisting of a main body an side- 1 walls, and being formed with open ends and an (zlpen top, a dividing wall extending up war ly from said main body, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, substantially as and for the purposes set forth.

13. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an 0 en top, a'dividing wall extending 'upwar y from said main body, means for securing said sections end to end, a conduitcover detachably secured upon each sectlon,

each conduit-cover being formed with an outlet opening surrounded by an upwardly extending wall-portion, and a closing-plate detachably secured upon said wall-portion,

combined with the floor-beams and floorboards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover, substantially as and for the purposes set forth.

14. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and Side walls, and being formed with open ends and an open top, a dividing Wall extending upwardly from said main body, means for securing said. sections end to end, a-conduitcover detachably secured upon each section, each conduit-cover being formed with an. out let opening surrounded by an u wardly extending wall-portion, a cl'osin ate detachably secured upon said wall-portion, said with a screw-threaded hole, an threaded plug removably arranged in said late being provided with a screw-threaded hole, and a screw-threaded plug removably arran ed in said hole, combined with the floorcams and floor-boards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover, substantially as and for the purposes set forth.

15. A floor-conduit for buildings comprising a multiplicity of conduit-sections each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extendin flanges at the upper edges of said side-wa ls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, and a conduit-cover detachably secured upon the flanges of said side-walls, combined with the floor-beams and floor-boards, and floorcovers dctachably secured to said floorbeams, directly over each conduit-cover, substantially as and for the purposes set forth.

16. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and'sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flan es of another sec tlon, and .a conduit-cover etachably secured upon the flanges of said side-walls, eachconduit-cover being formed with an outlet 0 ening surrounded by an upwardly exten ing wall-portion, and a closing plate detachably secured u on said wallortion, combined with the oor-bearns an floor-boards, and floor-covers detachably secured to said floorbeams, directly over each conduit-cover, substantially as and for the purposes set forth.

17. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body S-Ild SldG- walls, and being formed with open ends and an open top, laterally extendin flanges at the upper edges of said side-Wa ls, vertical flanges at the ends of each section, meansfor securing the vertical flanges of one section upon the vertical flanges of another section,

a conduit-cover detachably secured upon'the flanges of said side-walls, each condult-cover being formed with an outlet opening sur rounded by an upwardly extending wa l-portion, a closing-plate detachably secured upon said wall-portion, said plate bein provided hole, combined I with thex floor-beams and floor'-boards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover,substantially as and for; the

section consisting of a main liody and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one sect-ion upon the vertical flanges of another section, a dividing wall extending up\ ard 1y from said main body, and a conduit-cover detachably secured upon the flanges of said side-walls,

combined with the floor-beams and floorboards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover, substantially as and for the purposes set forth.

19. A floor-conduit forv buildings, comprising a multiplicityv of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section,

an'open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon' the vertical flanges of another section, a dividing wall extending upwardly from said main body, a conduit-cover detachably se-. cured-upon the flanges of said sideewalls, each conduit-cover being formed with an outlet opening surrounded'by an upwardly extending wall-portion, a closing-plate detachably secured upon said wall-portion, said late being provided with a screw-threaded ole, and a screw-threaded plug removably arranged in said hole, combined with thefloor-beams fand floor-boards, and floor-covers detach ably secured to said floor-beams, directly I over each conduit-cover, substantially as and for the purposesset forth.

21. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open ends and an open-top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, combined with the floor-beams and floor-boards, and floorcovers detachably secured to said floorbeams directly over each conduit-cover, each floor-cover being formed with an opening,

and a plate detachably secured over, the opening in each floor-cover, substantially as and for the purposes set forth.

a 22. A floor-conduit for buildings, comprising a multiplicity of conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, each conduitcover being formed with an outlet opening surrounded by an upwardly extending wallportion, and a closing-plate detachably secured upon said wall-portion combined with the floor-beams and floor-boards, and floorcovers detachably secured to said floorbeams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate 'detachably secured over the opening in each floor-cover, substantially as and for thepurposes set forth.

28. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open, ends and an open top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, each conduitcover' being formed with an outlet opening surrounded by an u wardly extending wallportion, a closing p ate detachably secured upon said wall-portion, said plate being pro- "ded with a screw-threaded hole, and a screw-threaded 1Eplug removably arran ed in said hole, com med with the flooreams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate deta'chably secured over the opening in each floor-cover, substantially as and for the purposes set forth. I

24. A floor-conduit for buildings comprising a multiplicity of conduit-sections,

.each section consisting of a main body and side-walls, and being formed with open ends and an open top, a dividing wall extending upwardly froinsaid main body, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, combined with the floor-beams and floor-boards, and-floor-covers detachably secured. to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the openin in each floor-cover, gubstantially as and or the purposes set orth.

25. A floor-conduit for buildings comprising a multiplicity of conduit-sections,- each section consisting of a main body and side-walls, and being formed with open ends and an open top, a dividing wall extending upwardly from said main body, means for securing said sections end to end, a conduit cover detachably secured upon each section, each conduit-cover being fori'ned with an outlet openin surrounded by an upwardly extendin wa l-portion, and a closing-plate detachab y secured u on said wall-porthm, combined with the oor-bean1s and. floorboards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the openin in each floor-cover, substantially as and for the purposes set forth.

26. A floor-conduit for buildings com prising a multiplicity of conduit-sections, each section consisting of a main body and side-walls, and being formed with open ends and an open top, a dividin wall extending upwardly from said main ody, means for securing said sections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet openin r surrounded by an upwardly extending wa l-portion, a closingate detachably secured upon said wal -portion, said late being rovided with a screw threa ed hole, an a screw-threaded lug removably arranged in said hole, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floorbeams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the opening in each floor-cover, substantially as and for the purposes set forth.

27. A floor-conduit for buildings com-. prising a multiplicity of conduit-sections, each section consisting of a main body and side-walls, and being formed with open ends and an open top, laterall extending flanges at the upper edges of sai side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section,

and a conduit-cover detach ably secured upon the flanges of said side-walls, combined with the floor-beams and floor-boards, and flooreovers detachably secured to said floorbeams directly over each conduit-cover,

each floor-cover being formed with an opening, and a plate detachably secured over the opening in each floor-cover, substantially as and for the purposes set forth.

28. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, and a conduit-cover detachably secured upon the flanges of said side-walls, each conduitcover being formed with an outlet opening surrounded by an upwardly extending wallportion, and a closing-plate detachably secured upon said wall-portion,combined with the floor-beams and floor-boards, and floorthe upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical llanges of one section upon the vertical flanges of another section, a conduit-cover detachably secured upon the flanges of said'side-walls, each. conduit-cover being formed with an outlet opening surrounded by an upwardly extending wallportion, a closing plate detachably secured upon said wall-portion, said plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the opening in each floor-cover, substantially as and for the purposes set forth.

30. A floor-conduit for buildings, comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges ofsaid side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, and a conduit-cover detachably secured upon the flanges of said sidewalls, combined with the floor-beams and floor-boards, and a floor-cover detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the opening in each floor-cover, substantially as and for the purposes set forth.

3].. A floor-conduit for buildings, comprising a multiplicity of conduit-sections, each' section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one secforth.

.32. A floor-'conduitfor buildings, comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said sideewalls, vertical flanges at the ends of each section, means for securing the vertical fianges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, a conduitcover detachably secured upon-the flangesof said side-walls, each conduit-cover being formed with an extending wall-portion, a closing-p ate detachably secured upon said-wall-portion, said plate being provided with a screwet'hreadedhole, and a screw-threaded plug removably arranged in said hole, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floorcover being formed withvan opening, and a plate detachably secured over the opening in each floor-cover, substantially as and for the purposes set forth. r

33. A floor -conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, combined with floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floorcover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a substantially as and for the purposes set outlet opening surrounded by an -n wardly screw-threaded hole, and a screwthreade 'l portion, and a closing-plate detachably secured upon said wall-portion, combined with floor-beams and floor-boards, and floor-cov-j ers detachably secured to said floor-beams directly over each conduit-cover, each floorcover being formed with an opening, a plate detachably secured over the opening in eachfloor-cover, each plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in each hole sub stantially as and for the purposes set forth. 35. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section being formed with open ends and an open top, means for securing said. sections end to end, and a conduit-cover detachably secured upon each section,.each conduitcover being formed with an outlet opening surrounded by an u wardly extending wallportion, a closing p ate detachablysecured '85 upon said wall-portion, said plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in said hole, combined with floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly-over each conduit-cover, each floor-cover being formed with an opening, a plate detachably secured overthe openin in each floor-cover, each plate being provided with a screw-threaded hole, and a screwthreaded plug removably arranged in each hole, substantially as and for the purposes set forth.

36. A floor-conduit for buildings comprising a Inultiplicityof conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, a dividing wall extending upwardly from said main body, means for securing said sections end to end, and a conduit-cover detachably secured upon each section, combined with floor-beams and fioorboards, and floor-covers detachably secured to said fioorbean1s directly over each conduit-cover, each floor-cover being formed 110 with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded ole, and a screw-threaded plug removably arranged in each hole, substantially as and for the purposes set forth.

37. A floor-conduit'for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, a dividing wall extending upwardly from said main body, means for securing said sections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet openin surrounded by an upwardly extending wa l-portion, and a closing-plate detachably secured uponsaid wall-portion, combined with floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided wlth a screw-threaded hole, and a walls, and being formed with open ends and an 0 en top, a dividing wall extending upwar y from said main body, means for securing said sections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet openin surrounded by an u wardly extending Wa lortion, a closing-p ate detachably secure upon said wall-portion, said late being provided with a screw-threaded hole, and a screw-threaded lug removably arranged in said hol'e, combined with floorbeamsand floor-boards, and floor-covers dctachably secured to said floor-beams directly over each conduit-cover, each floorcover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in each hole, substantially as and for the pur oses set forth.

39. A floor-conduit for bui dings comprising a multiplicity of conduit-sections, each section consisting of a main body and sidewalls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said slide-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, and a conduit-cover detach ably secured upon the flanges of said side-walls, combined with floor beams and floor boards, and floorcovers detachably secured to said floorbeams directly over each con duit-cove'r, each floorcover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded hole, and a screw threaded plug removably arranged in each hole, substantially as and for the purposes set forth. 7 v

40. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and side-walls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section,

. and a conduit-cover detachably secured upon the flanges of said side-walls, each cond nt-cover being formed with an outlet opening. surrounded by an upwardly extending wall-portion, and a closin -'-plate detachably secured upon said wal-por ion, combined with floor-beamsand floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduitcover, each floor-cover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in each hole, substantially as and for the purposes set forth.

41. A floor-conduit for buildings comprising a multiplicity of conduit-sections, eachsection consisting of a main body and side-walls, and being formed with open ends and an open. top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a conduit-cover detachably secured u on the flanges of said SldB-WflllS, each conduit-cover being formed with an outlet opening surrounded by an 11 wardly ext-ending wall-portion, a closingate detachably secured upon said Wal -portion, said late being provided With a screwthrea ed hole, and a screw-threaded lug removably arranged in said hole, combined with floor-beams and floor-boards, and floorcovers detachably secured to said floor-beams directly over each conduitcover, each floorcover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded hole, and a screw-threaded plug removably arranged in each hole, substantially as and for the purposes set forth.

42. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and side-walls, and being formed with open ends and an open top, laterally extending flanges at the upper edgesof said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, and a condultcover detachably secured upon the flanges of said side-walls, combined with floorbeams and floor-boards, and floor-covers detachably secured to said floor-beams (IL rectly over each conduit-cover, each floorcover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded role, and a screw-threaded plug removably arranged in each hole, substantially as and for the purposes set forth.

43. A floor-conduit for buildings comprising a multiplicity of conduit-sections, each section consisting of a main body and opening surrounded by an upwardly extendin Wall-portion, and'a closln -plate dewith a screw-threaded w cover,

tachab y secured upon said wad-portion, combined with floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduiteach floor-cover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each late being provided with a screw-threaded ole, and a screw-threaded plug removably arranged in each hole, substantially as and for thep'urposes set forth. a

44. A floor-conduit for buildings comprising, a multiplicity of conduit-sections, each section consisting of a main body and side-walls, and being formed with open ends and an open top, laterally extending flanges at the upper edges of said side-walls, vertical flanges at the ends of each section, means for securing the vertical flanges of one section upon the vertical flanges of another section, a dividing wall extending upwardly from said main body, a conduit-cover detachably 'secured u on the flanges of said side-walls,

each con uit-cover being formed with an outlet openin surrounded by an u wardly extending wa l-portion, a closingate detachably secured upon said wal -portion, said plate being provided with ascrewthreaded hole, an a screw-threaded lu removably arranged in said hole combine with'floor-beams and floor-boards, and floorcovers detachably secured to said floorbeams directly over each conduit-cover each floor-cover being formed with an opening, a late detachably secured over the openin in each floor-cover, each late being provided ole, and a screw-v threaded plug removably arranged in each hole, substantially as and forthe purposes set forth. 55 v 45. A floor-conduit for buildings comprising a multiplicity of rectangularly formedconduit-sections, T-shaped conduit-sections, and cross-shaped conduit-sections, each sec tion being formed with open ends and an open top, means for securing said sections end to end, correspondin ly formed conduitcovers detachably secure u on each section, each conduit-cover being ormed with an outlet opening surrounded by an upwardly v with from'the bodies of said sections, means for extending wall-portion, and a closing-plate detachably secured upon said wall-portion.

A floor-conduit for buildings comprlsing a multiplicity of rectangularly formed conduit-sections, T-shaped conduit-sections, and cross-shaped conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, correspondingly formed conduitcovers detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by anupwardly extending wall-portion, a closingplate detachably secured upon said wal portion, said plate bein provided with a screw-threaded h'ole, an a screw-threaded 1 plug removably arranged in said hole.

1 47. A floor-conduit for buildings comprising amultiplicity of rectangularly formed conduit-sections, T-shaped conduit-sections, and cross-shaped conduit-sections, each secwalls, and being formed with open ends and an open'to dividm walls extending upwardly securing saidsections end to end, a conduitcover detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by an upwardly extendin wa l-portion, and a closing-plate detachab ysecured upon said wall-portion.

48'. ing a multiplicity of rectangularly formed OOIIdHlt SGCtIOIIS, T-shaped conduit-sections, and cross-shaped conduit-sections, each section consisting of a main-body and sidewallsfiand being formed with open ends and an open to said sections being provided with dividm walls extending upwardly from the bodies of said sections, means for securing said sections end to end, a conduitcover detachablysecured upon each section,- each conduit-cover being formed with an outlet openin surrounded by an upwardly extendin wa l-portion, and a closlng-plate detachably secured upon said wall-portion, said late being rovided with a screwthrea ed hole, and a screw-threaded plug removabl arranged in said hole. 49. A oor-conduit for buildings comprising a multiplicity of rectangularly formed conduit-sections, T-shaped conduit-sections, and cross-shaped conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and corres ondingly formed conduit-covers detachab y secured upon each section, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams, directly over each conduit-cover, substantially as and for the purposes set forth.

said sections being provided ,tion consisting of a main-body and sidefloor-conduit for buildings compris- 50. A floor-conduit for buildings compris tachably secure duit-cover, substantially as mg a multiplicity of rectangularly formed conduit-sectlons, T-shaped conduit-sections, and cross-shaped conduit-sections, each section being formed with open ends and an open top, means forsecuring said sec-tions end to end, correspondin covers detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by an upwardly extending wall-portion, and a closing-plate detachably secured u )on said wall-portion, combined with the floor-beams and floorboards, and floor-covers detachably secured to said floor-beams, directly over each conand for the purposes set forth.

51. A floor-conduit for buildings compris ing a 1nulti)licity oi rectangularly formed coiuluit-sections, T-shaped conduit-sections, and cross-shaped. conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, correspoiulingly formed conduitcovers detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by an n )wardly extending wall- )ortion, a closing-plate del upon said wall-portion, said. )late being provided with a screw-tlncaded role, and a screw-tlu'eaded )lug rcniovably arranged in said hole, combined with the floor-beams and floor-boards, and floorcovers detachably secured to said floorbeains, directly over each conduit-cover, substantially as and for the purposes set forth.

52. A lloor-coinluit for buildings comprising a multiplicity of rectangularly formed condnit-sections, T-shaped conduit-sections, and cross-shaped conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and corres 0ndingly formed conduit-covers detachably secured upon each section, coinbined'with the floor-beams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each coi'iduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the opening in each floorcover, substantially as and for the purposes set forth.

53. A floor-conduit for buildings comprising a multiplicity of rectangularly formed conduit-sections, T-shaped conduit-sections, and cross-shaped comluit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, correspondingly formed conduit covers detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by an upwardly extendin wall-portion, and a closing-plate detachab y secured upon said wallporti0n,

"1y formed, conduitcombined with the floor-beams and floorboards, and floor-covers detachably secured to said 'lloor-beains directly over each condnitco\-'er, each iloor-covcr being formed with an opening, and. a plate detachably securei'l over the opening in each 'lloorcover, substantially as and for the purposes set forth.

54. A floor-conduit for buildings comprising a multiplicity of rectangularly formed conduit sections, T shaped conduit sections, and cross-shaped conduit sections, each section being formed with open ends and an open top, means for securing said sec-v tions end to end, correspondingly formed conduit covers detachably secured upon each section, each conduit-cover being formed with an outlet opening surrounded by an upwardly extending wall-portion, a closingplate detachably secured upon said wall portion, said plate being provided with a screw threaded hole, and a screw-threaded plug removably arranged in said hole, combined with the floor-beams and floor-boards, and floor-covers detachably secured to said floorbeams directly over each conduit-cover, each floor-cover being formed with an opening, and a plate detachably secured over the opening iii-each floor-cover, substantially as and for the purposes set forth.

55. A floor-conduit for buildings comprising a multiplicity of rectangularly formed conduit-sections,T-shaped conduit-sections, and cross-shaped conduit-sections, each section being formed with open ends and an open top, means for securing said sections end to end, and correspondingly formed conduit-covers detachably secured upon each section, combined with floor-beams and floor boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an opening, a plate detachably secured over the opening in each floor-cover, each plate being provided with a screw-threaded hole, and a screw-threaded plug reinovably arranged in each hole, substantially as and for the purposes set forth.

56. A floor-conduit for buildings comprising a multiplicity of rectangularly formed conduit-sections, T-shaped conduit sections, and cross-shaped conduitsections, each section being formed with openends and an open top, means for securing said sections end to end, correspondingly formed conduitcovers detachably secured upon each section, each conduit cover being formed with an outlet opening surrounded by an upwardly extending wall-portion, and a closing-plate detachably secured u )on said wall-portion, combined with floorcams and floor-boards, and floor-covers detachably secured to said floor-beams directly over each conduit-cover, each floor-cover being formed with an open- 

